Comparison of Tamron 100-400mm f/4.5-6.3 Di VC USD (Model A035) and Tokina 80-400mm f/4.5-5.6 AT-X 840 AF-II

Attribute	Tamron 100-400mm f/4.5-6.3 Di VC USD (Model A035) ×	Tokina 80-400mm f/4.5-5.6 AT-X 840 AF-II ×
Notes	Available mounts: Canon EF, Nikon F; Optical Image Stabiliztion (CIPA: 4 stops); Moisture-Resistant Construction	Available AF Mounts: Canon, Minolta, Nikon; Included Accessories: Lens Hood, Fitted Soft Case
Magnification Ratio (x)	0.28	0.19
Filter Size (mm)	67	72
Length (mm)	199	136
Closest Focus (m)	1.5	2.5
Diagonal Angle of View (degree)	6.20 - 24.40	6.20 - 29.80
Focus Details	Internal; USD (Ultrasonic Silent Drive) motor	-
Focal Length (mm)	100.00 - 400.00	80.00 - 400.00
APS Equivalent	1.5x: 150 - 600mm; 1.6x: 160 - 640mm	1.5x: 120 - 600mm; 1.6x: 128 - 640mm
Brand	Tamron	Tokina
Image Circle	Image Circle	35mm
Name	Tamron 100-400mm f/4.5-6.3 Di VC USD (Model A035)	Tokina 80-400mm f/4.5-5.6 AT-X 840 AF-II
Weight (g)	1135	1050
Type	Telephoto Zoom	Telephoto Zoom
Aperture (f)	4.50 - 45.00	4.50 - 32.00
Diaphragm Blades	9	8
Diaphragm Blades Type	circular	-
Lens Construction	17 elements in 11 groups, including 3 LD (Low Dispersion) elements; eBAND coating; Fluorine coating	16 elements in 10 groups, including 1 SD element
Zoom System	Rotary	Rotating with lock
Diameter (mm)	86.2	77.2